A doctor wants to estimate the mean HDL cholesterol of all 20- to 29-year-old females. How many subjects are needed to estimate the mean HDL cholesterol within 2 points with 99% confidence assuming s = 16.1 based on earlier studies? Suppose the doctor would be content with Sss confidence. How does the decrease in confidence affect the sample size required? A 99% confidence level requires (Choose the correct answer below to fill in the blank.) subjects O A. 430 O B. 352 OC. 249 O D. 42968 A95% confidence level requires (Choose the correct answer below to fill in the blank) subjects. O A. 24895 O B. 249 OC. 352 OD. 430 How does the decrease in confidence affect the sample size required? O A. Decreasing the confidence level increases the sample size needed OB. Decreasing the confidence level decreases the sample size needed. OC. The sample size is the same for all levels of confidence.

Q: 24. Find d²4 zP 2. xp 4=3x² +34-8

A: Differentiate two times

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A:

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A:

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A:

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A:

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A:

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A:

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A: We can solve this as follows:

Angles in Circles

Angles within a circle are feasible to create with the help of different properties of the circle such as radii, tangents, and chords. The radius is the distance from the center of the circle to the circumference of the circle. A tangent is a line made perpendicular to the radius through its endpoint placed on the circle as well as the line drawn at right angles to a tangent across the point of contact when the circle passes through the center of the circle. The chord is a line segment with its endpoints on the circle. A secant line or secant is the infinite extension of the chord.

Arcs in Circles

A circular arc is the arc of a circle formed by two distinct points. It is a section or segment of the circumference of a circle. A straight line passing through the center connecting the two distinct ends of the arc is termed a semi-circular arc.